Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4a564a82570ecb8…

MALICIOUS

PDF

72.2 KB Created: 2021-01-08 19:56:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 92e8edc96d676e647803dc56ed2671a0 SHA-1: 03742db9268d031444b06d4398a0239724eb8469 SHA-256: f4a564a82570ecb8282227edde3bb3ba739fc13e34739db66d8978d1f2ff2024
194 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector, disguised as a document download. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or to serve a second-stage payload. No scripts were extracted, but the embedded URL is the primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://gettraff.ru/123?utm_term=how+do+i+love+thee+poem+pdf+download In PDF document text
    • https://cdn.sqhk.co/sovokeduseb/jiha3nE/xoropivelorovokix.pdfIn PDF document text
    • https://cdn.sqhk.co/mevojazix/nianajg/goveruzogijuf.pdfIn PDF document text
    • https://cdn.sqhk.co/rowofabuf/jiPqge6/8698149547.pdfIn PDF document text
    • https://cdn.sqhk.co/sijiposago/gjejdhg/bugubitibuzagik.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/jivala/24073122774.pdfIn PDF document text
    • https://s3.amazonaws.com/tedowafomaru/balotidevepojolinigogegun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c0be592-88be-420f-b121-ea03c34127ca/88946168202.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e6c3237-e60a-4b87-a27d-014f04a4697a/flying_fish_from_mario.pdfIn PDF document text
    • https://s3.amazonaws.com/zidenigad/all_my_twitter_data.pdfIn PDF document text
    • https://s3.amazonaws.com/retisovojor/android_one_mod_games.pdfIn PDF document text
    • https://s3.amazonaws.com/lorugipopuxe/84943698926.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/vafadegosugutazav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6db88462-b81c-47ad-a7ea-beabcc5ea0f6/tercera_ley_de_newton_ejemplos_en_la_vida_cotidiana.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/vobutobevujezufakepag.pdfIn PDF document text
    • https://s3.amazonaws.com/jemisajoda/nejevabeninivokikebusenus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49d4b7ef-06e5-4767-8a85-6e116d13c858/wireless_photo_transfer_app_for_ipad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a8a3468-446a-4029-8f76-f9ee407233bd/zuforo.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cffb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFFB 4908 bytes
SHA-256: 821b6edb761c8e0c8e5d4c50f6db3d838a53d5ebffc35204e62bc09525eb919e
font_01_sfnt_off0000e09d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE09D 10844 bytes
SHA-256: 21358fd0e77208decc9ec436980b52da03d09410e40785073ac29393b5c781b3
font_02_sfnt_off00010586.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10586 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

Open this report in the interactive analyzer, or submit your own file for analysis.